startkde出现$DISPLAY is not set or cannot connect to the X server

＃startkde
$DISPLAY is not set or cannot connect to the X server

解决：

xinit /usr/bin/startkde --display :1 -- /usr/bin/Xorg :1

或者：

xinit /usr/bin/startkde --display :1

If you want to play with examples like this, you might want to use xinit
to start your sessions:
xinit /usr/bin/startkde --display :1 -- /usr/bin/Xorg :1
will just about always get you what you want. If your command, startkde
in this case, does not have a "--display" flag, you‘ll have to export
DISPLAY=:1 beforehand and you might even need to add "-ac" to the Xorg
command line to allow connections.